Apparatus for graining and the like.



F. W. KUEHN.

APPARATUS FOR GRAINING AND THE LIKE.

APPUCATION FILED MAY 19. 1915.

1,173,523. Patented Feb. 29, 1916.

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F. W. 'KUEHN.

APPARATUSIOR GRAINING AND THE LIKE.

APPLICATION FILED MAY 19. I915.

m h Rm MW m2 M 1 P 1 9 z w w 4 7 m a E. m w E 5 I 4 a a 3 Z 01 0 1 K 4 oN 4 z N 7 FREDERICK W. KUEHN, OF ST. LOUIS, MISSOURI.

APPARATUS FOR GRAINING AND THE LIKE.

Specification of Letters Patent.

Patented Feb. 29, 1916.

Application filed May 19, 1915. Serial No. 29,167.

To all whom it may concern:

Be it known that I, FREDERICK W. KUEHN,

a citizen of the United States, residing at St. Louis, State ofMissouri, have .invented new and useful Improvements in Apparatus forGraining and the like, of which the following is a specification.

This invention relates to an apparatus for graining, ornamentation,fresco-relief work and the like, and relates more particularly to thattype of apparatus having a relief or distributing roll and apaint-carrying roll in contact with the relief-roll.

The objects of my invention are to provide a device for graining and thelike, whereby the graining, etc., may be expeditiously effected and thepaint or other coloring fluid applied to the surface treated in auniform and ready manner; to provide a device with improved means forholding the rolls in frictional and yielding contact with one another,and whereby the rolls may be readily adjusted relative to one another,so

that wearing down ofthe rolls is provided for, and the depth of colormay be easily varied; to provide a device with an improvedpaint-carrying roll wherein the paint carried by the roll has readyaccess to the absorbent covering and whereby the covering throughout itsentire surface may be uniformly supplied with the paint or othercoloring fluid; to obviate the stoppage or choking of the apertures orperforations in the paint-carrying roll; and, to provide apaint-carrying roll on which the absorbent covering may be easily andreadily adjusted or removed.

The above and other objects of my invention are accomplished by thestructure set forth in the accompanying drawings, in which-- Figure 1 isa perspective view of my improved apparatus or device. .Fig. 2 is an endview'of the same. Fig. 3 is a sectional view taken on line 3-3 of"Fig. 1. Fig. 4 is a detail sectional view taken on the line 44 of Fig.2. Fi 5' is a sectional view taken on line 5-5 0 Fig. 4.

My device consists substantially, in a distributing or patternrelief-roll 10, a paintcarrying or feed roll 11, a frame for each ofsaid rolls, and means for adjusting the frictional contact between theperipheries of the rolls 10 and 11.

The distributing roll 10 comprises a hollow cylinder 12 of sheet metal,preferably tin, and has a shaft 13 passing therethrough, the shaftprotruding beyond the ends of the cylinder to form suitable trunnions.About the perimeter of the cylinder 12 is a covering 14 preferably ofrubber or other suitable soft and elastic material. Upon the exteriorsurface of the covering ll'is a suitable pattern in relief, theparticular form of pattern varying according to the desired use.

The distributin roll 10 is mounted in a the side pieces of which areprovided adjacent their ends with elongated slots 16 which .receive thetrunnions of the shaft 13. At

the closed end of the U-shaped frame 15 is an oblong member or handle 17which is adapted to be grasped in the hand to manipulate the device. IThe feed or paint-carrying roll 11 comprises a hollow cylinder 18,formed preferably of tin or other suitable metal, and a covering 19about the perimeter of the cylinder 18. The covering is preferablyformed of felt, although it may be composed of any suitable absorbentmaterial. 1 The feed cylinder or body 18 is provided upon its perimeterwith indentations or corrugations, this being accomplished preferably bymeans of a screw-thread 20, which passes spirally from one end of thecylinder to the other. In the bottom of the spiral groove formed by thescrew-thread 20 is a series of apertures or perforations 21 which permitthe paint within the cylinder 18 to flow to the outside of the same intocontact with the felt or absorbent covering 19.

Various advantages are obtained by corrugating or providing the cylinder18 with the screw-thread 20, one of these being that the covering-19 isheldin spaced-apart relation from the apertures or perforations 21 .andtherefore the choking of the latter is prevented. It is, of course,evident that should a cylinder of uniform diameter be used the coveringwould rest over the apertures or perforations and prevent the ready flowof the paint therethrough, and, furthermore, due to the incrustation ofthe paint held in position in the perforations by the covering, theperforations would rapidly become choked.

Another advantage obtained by the use of my improved paintcarryingcylinder is that the paint passes through the perforations 21 and flowsabout the cylinder 18 in the groove between the perimeter of thecylinder 18 and the inner surface of the cover ing 19 so that allportions of the covering 19 may be uniformly supplied with a properamount of coloring fluid. It is, furthermore, evident, that should theold form of cylinder having a uniform diameter, be used, after theapparatus has been placed in use-and allowed to rest, the paint woulddry and form incrustations between the surfaces of the cylinder and thecovering thereon which would render it difficult to remove the covering,especially in .view of the extensive contact surface between thecovering and the cylinder. By providing the cylinder 18 with thescrew-thread 20 as shown, but a comparatively small portion of thesurface of the covering 19 comes into contact with the wall or perimeterof the cylinder. The covering 19 will sag very slightly into the spiralgroove formed by the screw-thread 20, (but without coming into contactwith the bottom of the groove and the perforations 21) and, therefore,when it is desired to adjust or remove the absorbent covering, it ismerely necessary to give a quick twist to the covering and then removethe same by revolving it about the cylinder similar to the manner ofremoving a nut from a bolt. The cylinder 18 is provided at one end witha screw-cap 22 whereby the paint may be introduced into the cylinder.The cylinder 18 has a shaft 23 passing therethrough which extends beyondthe endsof the cylinder.

The-paint-carrying roll 11 is mounted upon a frameconstructed,preferably, of a strip of spring metal which is bentsubstantially into U-shape to provide acrossstrip 25 and side-pieces 24.The cross-strip 25 is adapted to extend transversely across and beneaththe handle 17 with the side pieces 24 extending forwardly and up- Wardlyon the outside of the frame 15. The side-pieces 24, at their forwardends, are provided with round bearings which receive the ends of theshaft 23 of the roll 11. The frame for the paint-carrying roll 11 ispivotally secured to the frame15 of the distributing roll by means ofpivot screws 26 which extend through the sidepieces 24 and into theframe 15 and the handle 1?. When the parts are assembled, theperipheries of the rolls 10 and 11 contact and the outer ends of theframes for the rolls are thereby maintained in spacedapart relation andthe cross-strip 25 is spaced slightly below the under-surface of thehandle 17.

The handle 17 is provided with an elongated slot 27 through which passesan adjusting screw 28 having a suitable lingerengaging top whereby thesame may be easily manipulated. The lower end of the adjusting screw 28also passes through a threaded aperture 29 of the cross-strip 25intermediate its ends. To prevent the screw 28'from passing through theslot 27 a Washer der 18 to be supplied to the parts of the pattern onthe roll10. Should it be desired to adjust the rolls 10 and 11relatively to one another, it is merely necessary to manipulate orrevolve the adjusting screw 28 so as to carry the cross-strip 25- to orfrom the handle 27, as desired. Should the surfaces of the rolls l0 and,11 become worn, or should it be desired to apply a thicker coat of painton the article to be decorated, the screw 28 is turned so as to draw thecross-strip 25 toward the handle. It will be noted that as the frame forthe paint carrying roll is formed of resilient material, the cross-strip25, will give or bend (as shown in dotted lines of Fig. 5) upon theproper manipulation of the adjusting screw- 28, so that the roll 11 maybear yieldingly with the proper amount of force upon the roll 10. Byproviding this yielding means and locating the ends or trunnionsoftheshaft 13 of thedistributing roll. 10 in the elongated bearings orslots 16 in the'ends of the frame 15, a proper amount of play is allowedfor when rolling the apparatus over an uneven surface, and, therefore,the perimeters of the pair of rolls 10' and 11 are always maintained incorrect contact with one another.

It will be observed that in the practical use of my device, the paint orother coloring matter within the cylinder 18will be. fed through theperforations therein and become absorbed by the covering of felt 19, andthat as the two'rolls are frictionally held in contact and revolve inunison, the paint will be supplied to the relief-covering onthe'distrihuting roll, and that when the would be within the spirit ofmy invention,

and without departing from the scope of the following claims.

lVhat I claim as new is 1. In a device as specified, a paint-carryingroll comprising a hollow cylinder having upon its periphery a windinggroove provided with apertures and an absorbent cover for said cylinder.

2. In a device as specified, a paint-carrying roll comprising acylinder, and a thread to permit the ready adjustment and covering forsaid cylinder, said cylinder removal of said covering. having itsperimeter corrugated to provide In testimony whereof I have hereunto setspaces beneath the inner surface of said my hand in presence of twosubscribing 5 covering, said cylinder aliso having per- Witnesses.

forations in the grooves owned by said T corrugations whereby the paintWithin the FREDERICH KUEIIN' cylinder may readily flow into the spacesWitnesses: beneath said covering, the corrugations of DANIEL M.SCANNELL, 10 said perimeter being in the form'of a screwv MATHIAs HEIL.

